やりたいこと
AndroidのActivity上でTouchEvent(DoubleTap,LongPress,Fling,Scroll等)を取得したい。
やり方
GestureDetector.SimpleOnGestureListenerを使う。
（GestureDetector.OnGestureListenerとGestureDetector.OnDoubleTapListenerの併せ技）
サンプルコード
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public class MainActivity extends ActionBarActivity { private GestureDetector mGestureDetector; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //GestureDetectorを初期化 mGestureDetector = new GestureDetector(this, simpleOnGestureListener); } @Override public boolean onTouchEvent(MotionEvent event) { //GestureDetectorのイベントハンドラにMotionEventを渡す return mGestureDetector.onTouchEvent(event); } /** * 各イベント発生時の処理を記述する */ private final GestureDetector.SimpleOnGestureListener simpleOnGestureListener = new GestureDetector.SimpleOnGestureListener() { @Override public boolean onDoubleTap(MotionEvent event) { Log.i(this.getClass().getName(), "onDoubleTap"); return super.onDoubleTap(event); } @Override public boolean onDoubleTapEvent(MotionEvent event) { Log.i(this.getClass().getName(), "onDoubleTapEvent"); return super.onDoubleTapEvent(event); } @Override public boolean onDown(MotionEvent event) { Log.i(this.getClass().getName(), "onDown"); return super.onDown(event); } @Override public boolean onFling(MotionEvent event1, MotionEvent event2, float velocityX, float velocityY) { Log.i(this.getClass().getName(), "onFling"); return super.onFling(event1, event2, velocityX, velocityY); } @Override public void onLongPress(MotionEvent event) { Log.i(this.getClass().getName(), "onLongPress"); super.onLongPress(event); } @Override public boolean onScroll(MotionEvent event1, MotionEvent event2, float distanceX, float distanceY) { Log.i(this.getClass().getName(), "onScroll"); return super.onScroll(event1, event2, distanceX, distanceY); } @Override public void onShowPress(MotionEvent event) { Log.i(this.getClass().getName(), "onShowPress"); super.onShowPress(event); } @Override public boolean onSingleTapConfirmed(MotionEvent event) { Log.i(this.getClass().getName(), "onSingleTapConfirmed"); return super.onSingleTapConfirmed(event); } @Override public boolean onSingleTapUp(MotionEvent event) { Log.i(this.getClass().getName(), "onSingleTapUp"); return super.onSingleTapUp(event); } }; } |